feat(home): redesign homepage with editorial and launchpad layouts

Replace the minimal centered layout with a full literary/academic
homepage: logged-out users see an editorial hero, manifesto, demo
notes, and ZK primer; logged-in users see a personal launchpad
(greeting, repo tiles, last visited, review queue) followed by the
same editorial content below.

Uses DaisyUI CSS variables throughout (color-mix) so it adapts to
any theme change without hardcoded overrides.

src/views/HomeApp.vue

@@ -15,8 +15,7 @@ import WelcomeWorld from "@/components/WelcomeWorld.vue"
   display: flex;
   flex: 1;
   flex-direction: column;
-  align-items: center;
-  height: 100dvh;
+  min-height: 100dvh;
 }
 
 .authorize {